package com.xinfeng.commons.security;

import java.security.MessageDigest;

public class MD5 {

	/**
	 * MD5 加密
	 */
	private String getMD5Str(String str) {
		String result = "-1";
		
		MessageDigest messageDigest = null;

		try {
			messageDigest = MessageDigest.getInstance("MD5");

			messageDigest.reset();

			messageDigest.update(str.getBytes("UTF-8"));
			
			byte[] byteArray = messageDigest.digest();

			StringBuffer md5StrBuff = new StringBuffer();

			for (int i = 0; i < byteArray.length; i++) {
				if (Integer.toHexString(0xFF & byteArray[i]).length() == 1){
					md5StrBuff.append("0").append(Integer.toHexString(0xFF & byteArray[i]));
				}else{
					md5StrBuff.append(Integer.toHexString(0xFF & byteArray[i]));
				}
			}
			
			result = md5StrBuff.toString();
		} catch(Exception e) {
			e.printStackTrace();
		}

		return result;
	}
	
}
